SPIDR Is No Longer Available at NCEI

SPIDR (Space Physics Interactive Data Resource) was a standard data source for
solar-terrestrial physics, functioning within the framework of the ICSU World Data Centers.

It had a distributed database and application server network, built to select, visualize and model
historical space weather data distributed across the Internet.
SPIDR worked as a fully-functional web-application (portal) and as a grid of web-services, providing functions for other applications to access its data holdings. It was decommissioned on the ngdc.noaa.gov domain in May, 2016.